*{
    padding: 0;
    margin: 0;
}
a{
    text-decoration: none;
}
.box1{
    background-color: #fff;
    width: 453px;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: auto;
    height: auto;
    margin: 40px auto;
    padding-bottom: 20px;
}
body{
    background-color:rgba(0,0,0,.8);
}
form {
    padding: 30px 50px;
}
.header{
    padding: 20px;
    margin: 10px auto;
    font-size: 30px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    color: #333;
}
form>div{
    margin: 5px auto 0;
    width: 100%;
    text-align: left;
    overflow: hidden;
}
span{
    height: 100%;
    width: 50px;
    padding: 0 5px;
    text-align: center;
    color: #333;
    font-size: 18px;
}
input{
    display: inline-block;
    height: 24px;
    line-height: 24px;
    padding: 0 5px;
    width: 250px;
}
form>div>div{
    margin:5px auto;
    text-align: center;
    height: 15px;
    line-height: 15px;
    font-size: 10px;
    color: #cacaca;
}

.last{
    text-align: center;
}


button{
    cursor: pointer;
    height: 100%;
    width: 150px;
    border-radius: 5px;
    border: 0;
    background-color: #ff2661;
    color: #fff;
    font-size: 16px;
    line-height: 40px;
    font-weight: 600;
}